如何判斷動詞不定式和介詞

如何判斷動詞不定式和介詞
20.The discovery of new evidence led
to ___.(2003上海)
A.the thief having caught
B.catch the thief
C.the thief being caught
D.the thief to be caught
如何判斷to是介詞?

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匿名網友

led to 是一固定短語相[xiāng]儅於一個及物動詞,後有賓語,所以這裡的to是介詞.因爲介詞後才有名詞,動名詞或代詞賓語.所以這道題選C.the thief being caught.再如一些類似的[shì de]介詞to.refer,to.devote,to look forward to stick...請問如何最簡單地區別不定式和介詞要記的，沒[méi]有什麽槼律。

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